I don't understand the lure of the BFL larger units. For example, the 50Gh/s unit is $2,490. That is the same price as 10 Jalapeños which would put out same hash rate. If the 50Gh/s unit craps out you have nothing to mine with until repaired. With 10 Jalapenos if one goes out you are only down 10%. So other than perhaps having to yell over the sound of 10 Jalapenos running in a room, I don't get the down side. I also think when it comes time to sell them it would be easier to get a better return on the used hardware selling the cheaper Jalapenos units.

But I really can't figure out how to factor in the difficulty issue. When is the next time the payout gets reduced in half?